US20230106735A1 - Fish farming tank with an internal buoyancy ballast tank - Google Patents

Fish farming tank with an internal buoyancy ballast tank Download PDF

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Publication number
US20230106735A1
US20230106735A1 US17/795,682 US202117795682A US2023106735A1 US 20230106735 A1 US20230106735 A1 US 20230106735A1 US 202117795682 A US202117795682 A US 202117795682A US 2023106735 A1 US2023106735 A1 US 2023106735A1
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US
United States
Prior art keywords
ballast
tank
farming
shell
sump
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Pending
Application number
US17/795,682
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English (en)
Inventor
Åsmund HELLESØY
Cato LYNGØY
Halvor LARSSON AGA
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Hauge Aqua Solutions As
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Hauge Aqua Solutions As
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Assigned to HAUGE AQUA SOLUTIONS AS reassignment HAUGE AQUA SOLUTIONS AS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Hellesøy, Åsmund, LARSSON AGA, Halvor, LYNGØY, Cato
Publication of US20230106735A1 publication Critical patent/US20230106735A1/en
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K61/00—Culture of aquatic animals
    • A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
    • Y02A40/81—Aquaculture, e.g. of fish

Definitions

  • the invention is a farming tank with a vertical, main axis and is equipped with a closed, rigid shell and arranged to contain a farming volume for fish. More specifically, the tank has an inner, highly placed ballast tank arranged inside the shell.
  • the floating collar will provide an attack point for incoming waves. This can, in demanding sea conditions, lead to a stronger hydrodynamic response than desired, and one can experience waves slamming against the annular, generally vertical outer side of the floating collar. In such demanding sea conditions, one can also experience that the free inner surface also contributes negatively to the hydrodynamic response and that inner surface waves occur which strike and are in danger of damaging the farming organisms or internal equipment for handling fish, separating grids and / or nets. In general, it is also desirable to limit the swaying that otherwise interferes with flow in pipes and tanks in treatment plants.
  • D1 WO2019035719 belonging to Hauge Aqua describes a vertically standing, egg-shaped farming tank with a floating collar and with a ballast section arranged in the bottom part.
  • D2 NO343945 SmartFlex AS describes a floating, closed fish farm installation comprising a toroidal tank and a centre raft. An annular walkway is arranged over the water surface inside the annular tank.
  • D3 US4224891 Rinaldi describes at the top straight-cut, partially egg-shaped frame structures that carry a common platform or deck structure.
  • the frame structure comprises an outer and an inner frame profile where annular storage and ballast tanks are arranged in the lower third. There is an axially, central, large opening at the bottom.
  • D4 US4224891 Leow describes a system and a method for offshore aquaculture and aquaculture which is close to land by using floating, closed, flattened farming tanks with an approximately circular plan outline.
  • the invention contributes to solving such problems and related problems and can be summarised as a farming tank ( 1 ),
  • FIG. 1 is a vertical section through a generally egg-shaped farming tank ( 1 ) according to the invention and in which the ballast tank ( 20 ) in the embodiment shown has an inwardly directed conical wall ( 22 ) against the farming volume (2) and where the outer wall ( 24 ) of the ballast tank ( 20 ) is comprised of a higher-lying portion ( 10 H) of the shell ( 10 ).
  • the ballast tank can be annular and can be adjacent to a working deck which covers all or part of the central portion surrounded by the ballast tank and inside the upper part ( 11 ).
  • the ballast level in the ballast tank ( 20 ) is adjustable and there are inlets and outlets for the farming volume (2) which means that the water level in the farming volume, to a certain extent, follows the degree of ballasting. An operation draft and a so-called survival draft are illustrated, which are covered by the extent of the degree of immersion adjusted by the ballast tank ( 20 ).
  • FIG. 2 illustrates possible details of the ballast tank in that on the right side of the upper part of the drawing, which is a vertical section of the tank ( 10 ), a pump ( 30 ) is arranged with an outer ballast supply pipe ( 26 ) and an inner ballast pipe ( 25 ) arranged to ballast up and down.
  • the section on the left side of the upper part is enlarged and shows a rounding of the inner wall ( 24 ) at the lower end in the joint against the shell ( 10 ), and with a sump pipe ( 24 ) for draining the ballast tank ( 20 ).
  • At the bottom of the page is an imaginary horizontal section or outline of an embodiment of the tank ( 10 ) (in outline) and a projected outline of the ballast tank ( 20 ) with pump and pipe and drainage.
  • FIG. 3 illustrates an embodiment of the invention where an annular channel is arranged in the top section of an annular frame ( 19 ) with a possible waste seine or separating grid or the like, so that one can lower and raise equipment by winches ( 18 ).
  • FIG. 4 illustrates variants of configurations of the ballast tank ( 20 ) in the higher section of the shell ( 10 ) of the tank ( 1 ).
  • FIG. 4 a illustrates a vertical section of a purely conical, funnel-shaped, inner wall ( 22 ) of a ballast tank ( 20 ) according to the invention in a vertical ellipsoid or egg-shaped shell ( 10 ).
  • FIG. 4 b illustrates, in the same projection as FIG. 4 a , a partially conical, funnel-shaped, inner wall ( 22 ) of a ballast tank ( 20 ) according to the invention in a vertical ellipsoidal or egg-shaped shell ( 10 ), where the upper part of the inner wall ( 22 ) of the ballast tank runs into a vertical casing, and where a centrally arranged, generally cylindrical, upper inner section (which can have a working floor 16 or only be a tank) is arranged in the middle of this upper cylindrical section of the inner wall of the ballast tank.
  • This embodiment indicates the main shape of that shown in FIG. 3 .
  • FIG. 4 c illustrates another embodiment of the invention where the inner wall ( 22 ) is generally tapered upwards and is gradually reduced as it is comprised of horizontal sections of annular plates built together with vertical casings and with a casing-shaped centre section which extends up to the top inside the shell ( 10 ).
  • FIG. 4 d illustrates an embodiment of the invention with a generally conical inner wall ( 22 ) of the ballast tank according to the invention, where the upper part of the inner wall ( 22 ) of the ballast tank runs above in a simple, relatively narrow casing at the top so that the free surface of the farming volume in, or closely below, the narrow casing becomes very small.
  • FIG. 5 illustrates a vertical section through embodiments of the invention and shows inlets ( 81 ) and outlets ( 82 ) for the main replacement of water to the farming volume, and pumps ( 80 ) in the inlet and / or the outlet. Furthermore, FIG. 5 illustrates a sump ( 90 ) for collecting dead fish and drainage at the bottom of the farming volume as well as a drainage pipe ( 91 ) indirectly to a particle separator ( 93 ) and a sludge tank ( 96 ) at the working deck in the upper section ( 11 ) of the tank ( 1 ).
  • the invention is a farming tank ( 1 ), where the tank has:
  • One part of the upper section ( 11 ) of the shell can constitute the outer wall ( 24 ) of the ballast tank ( 20 ) which is thereby integrated, while one wall ( 22 ) delimits the ballast tank ( 20 ) inwards towards the upper part of the farming volume (2).
  • the farming tank ( 1 ) is designed to be moored and is fitted with fastening points for mooring lines.
  • the ballast tank ( 20 ) can be one section or divided into several sections ( 23 ) by means of bulkheads ( 21 ).
  • the ballast tank ( 20 ) is a buoyancy ballast tank, an upper ballast tank, i.e., it shall contribute to the farming tank’s buoyancy to an adjustable degree by its air filling and can be ballasted down with water.
  • ballast tank ( 20 ) We just call it “ballast tank ( 20 )” below.
  • An advantage of having such an internal and highly placed ballast tank ( 20 ) is that the shell ( 10 ) has a more and more reduced outer cross-sectional area (A 10 ) (see FIG. 4 a ) the greater the draft of the shell ( 10 ); the shell then does not need an outer, annular buoyancy collar.
  • the upper section ( 11 ) of the farming tank ( 1 ) will act as a ripple shear for large enough waves, i.e., that the waves can strike over.
  • Having the buoyancy ballast tank ( 20 ) inside the egg-shaped shell reduces the otherwise larger attack surface that the waves have on an outer floating collar, which would otherwise also form a wall that would give waves against the wall, and also greater accelerations from hydrodynamic responses.
  • the draft of the farming tank ( 1 ) can be regulated essentially by water ballast in the ballast tank ( 20 ).
  • the ballast system comprising the ballast tank ( 20 ) is adapted to be used to increase draft to e.g., so-called survival draft as shown in FIG. 1 in case of bad weather with demanding sea conditions or arranged to pump out water to reduce draft to other drafts, for example to an operating draft as shown in FIG. 1 . so that one can have access to hatches to working decks and operate with a lowered water level in the farming volume to work with the fish.
  • ballast tank ( 20 ) as an annular, inner structure is that the structure becomes easy to build, that it becomes strong due to its double curved surface, and that a continuous inner wall ( 22 ) can be obtained which gives lower weight than if the ballast tank should lie like a collar on the outside of the shell ( 10 ).
  • the ballast tank ( 20 ) is generally axisymmetric annular with a continuous inner wall ( 22 ).
  • ballast tank ( 20 ) located inside is mentioned above.
  • a further advantage of having the ballast tank ( 20 ) annular and internal is that the construction becomes simple and has a continuous inner wall ( 22 ).
  • the inner ballast tank ( 20 ) does not give much increased weight if the ballast tank ( 20 ) should be divided by bulkheads ( 21 ) into several separate tanks, and thus sloshing in the ballast tank ( 20 ) will also be prevented.
  • the axis symmetry means that the farming tank ( 1 ), to a large extent, acquires sea properties that are independent of the weather direction, i.e., the wind and wave directions.
  • the inner wall ( 22 ) of the ballast tanks ( 20 ) has a generally upwardly tapering shape. This can be step shaped, or funnel shaped as shown in section in FIGS. 1 , 2 , and 3 .
  • An advantage of having an upwardly tapering inner wall ( 22 ), i.e., generally an inverted funnel shape, is that the inner cross-sectional area, i.e., of surface of the farming volume, decreases with increasing internal water level, that a reduced internal wave state is achieved, and that sloshing and thus the forces from rippling in the inner surface of the farming volume (2) decrease with increasing internal water level.
  • the hydrodynamic response of the tank becomes smaller at higher internal water levels than at lower internal water levels, and the accelerations become lower and the movements become calmer. This contributes to improved animal welfare for the salmon or any fish one could have in the tank.
  • the upwardly tapering inner wall ( 22 ) is conical over a substantial part of its vertical extent.
  • FIGS. 1 , 2 , and 3 it is shown that the inner wall ( 22 ), in its vertical section, forms approx. 45 degrees with the vertical line and forms a fairly acute angle with the shell ( 10 ).
  • This transition can be rounded off towards the shell ( 10 ) in the construction, see the enlarged portion of the transition shown in FIG. 2 , to simplify assembly / construction and to form a rounded lower part of the tank which provides space for drainage pipes ( 24 ), passages etc. low down in the ballast tank ( 20 ).
  • the ballast tank ( 20 ) has a radial outer wall ( 24 ) which follows along a higher lying portion ( 10 H) of the shell ( 10 ) or is formed by a high lying portion ( 10 H) of the shell ( 10 ) itself.
  • the tank ( 1 ) is equipped with a ballast pump ( 30 ) arranged to fill or empty the ballast tank ( 20 ) partially or completely with water via a ballast water channel ( 25 ).
  • the shell ( 10 ) of the tank ( 1 ) is provided with a sharper end ( 11 ) upwardly directed and with a blunter portion ( 12 ) directed downwards, i.e., where the shell ( 10 ) has the shape of an egg with the pointed end ( 11 ) upwards.
  • the ballast tank ( 20 ) can comprise radial, vertical bulkheads ( 21 ) in the ballast tank ( 20 ) which can thus comprise a number of ballast tank sectors ( 23 ). Bulkheads will counteract sloshing and unwanted instability and unwanted hydrodynamic responses by “ringing” in the ballast tank ( 20 ).
  • the high lying ballast tank ( 20 ) comprises at least one ballast pump ( 30 ) with a ballast pipe ( 25 ) down to near the bottom of the ballast tank ( 20 ), see FIG. 2 .
  • a bulkhead opening is shown ( 24 ') in the ballast tank ( 24 ).
  • the ballast pump ( 30 ) and the ballast pipe are arranged to fill or to empty the ballast tank ( 20 ) to the desired degree.
  • the ballast pipe ( 25 ) runs down inside the ballast tank ( 20 ) itself.
  • an outer to sea supply pipe ( 26 ) runs between the pump and the sea outside the exterior of the shell ( 10 ), it must necessarily extend at least down to below the waterline when the ballast tank ( 20 ) is completely emptied and the shell ( 10 ) floats high, but the sea supply pipe ( 26 ) can also extend down via the ballast tank ( 20 ) and out through the shell ( 10 ) via a passage at the bottom of the ballast tank ( 20 ).
  • a significant advantage of this is that we avoid disturbing pipes or having vulnerable pipes outside the tank or especially that we avoid ballast pipelines inside the actual farming volume (2) where the fish are and where cleaning and hygiene are important.
  • the ballast tank ( 20 ) is equipped with standing vertical bulkheads ( 21 ) and which thus divide the ballast tank ( 20 ) into a number of bulkhead spaces ( 23 ) or ballast tank sectors ( 23 ), see FIG. 2 .
  • each ballast tank portion / bulkhead space ( 23 ) has a ballast pipe ( 25 ).
  • the ballast pipe ( 25 ) can run down inside the bulkhead space ( 23 ) / ballast tank sector ( 22 ), in order to avoid “disturbing” pipes around, and in particular that we avoid having pipelines inside the farming volume (2).
  • the tank ( 1 ) is provided with a ballast or ballast bottom tank ( 40 ) arranged inside or outside the shell ( 10 ) and near a lower end of the shell ( 10 ), for adjusting the mass centre downwards, and for this reason, increase the stability of the tank. If the tank itself has sufficient stability, one can do without solid ballast. However, in order to obtain a sufficient rectifying moment, it can be an advantage to have a ballast weight in the form of ballast or a ballast bottom tank ( 40 ).
  • the ballast bottom tank ( 40 ) can be filled with seawater or a mass of higher density than seawater, e.g., sand slurry, and can be equipped with a ballast pump and ballast pipes from the deck or directly through a lower part of the shell ( 10 ).
  • the tank ( 1 ) is provided with a vertical channel ( 15 ) arranged axially in the upper portion ( 11 ), and where the vertical channel ( 15 ) is surrounded by a working deck ( 16 ) which extends below the upper desired water level, so that a small, free surface area is formed at such a highwater level.
  • Such a vertical channel ( 15 ) are both that ripples are reduced to a minimum at high internal water levels, e.g., in “survival mode” or in the desired immersed mode, and that the fish after all has access to go up and snatch air, that gases can be vented via the space remaining in the vertical duct ( 15 ), and that one has access to a farming volume via a door or hatch (not shown).
  • the tank ( 1 ) comprises a ring channel ( 17 ) at the top of the ballast tank ( 20 ), see FIG. 2 , where the ring channel ( 17 ) is open downwards towards the farming volume (2) and delimited upwards by the shell ( 10 ).
  • the annular channel comprises one or more winches ( 18 ) for raising and lowering an annular frame ( 19 ) for a separating grid or waste seine ( 95 ).
  • the frame ( 19 ) can be raised above the water surface by the farming volume (2) so that it means (a) storing the frame ( 19 ) and equipment stored or connected to the frame above the inner water surface so as to avoid growth when the frame and / or the equipment is not in use in the farming volume (2), (i.e., in the water in the farming volume) and (b) it is avoided that the frame and the equipment stand in the way of fish going up to the surface to snatch air.
  • one or more pumps ( 80 ) are arranged through openings ( 81 , 82 ) through the shell ( 10 ), see FIG. 2 and FIG. 5 .
  • the openings ( 82 ) arranged through the wall ( 22 ) of the funnel-shaped portion which otherwise constitutes the wall of the tank ( 10 ) of the upper portion ( 10 H) of the shell ( 10 ).
  • Large replacement of water is required when the farming volume contains thousands upon thousands of kilos of farmed fish.
  • the outlet through the openings ( 82 ) is arranged to take out used water with fine particles which do not settle, and which can appear as a thin cloud, and which can preferably drift away with the current, and which will not settle to the bottom.
  • the pumps ( 80 ) are arranged so that the lower openings ( 81 ) are for water intake near the bottom portion ( 12 ) of the shell ( 1 ).
  • Filter devices are provided on the intakes to prevent the intake of small organisms such as gyrodactylus and other unwanted organisms. There can be filters or grids on the outlets to prevent the ingress of unwanted organisms.
  • the inlets ( 81 ) can let the water in in a direction that has a certain tangential component to achieve circulation of the water masses.
  • the outlets ( 82 ) at the top can have a certain tangential component.
  • the pumps ( 80 ) are arranged at the openings ( 82 ) through the upper portion ( 10 H), a negative pressure will occur in the shell ( 10 ) so that the inner water level in the farming volume becomes somewhat lower than the outer waterline of the shell. If the pumps ( 80 ) are arranged in the inlet openings ( 81 ) in the lower part, an overpressure will occur in the shell ( 10 ) so that the inner water level becomes higher than the outer water line.
  • the pump ( 80 ) is formed as an inverted propeller in the opening, with turbine blades ( 83 ) mounted in a shaft-free annular rotor ( 84 ) in a surrounding electrically annular stator ( 85 ), which are together comprised of a pump motor ( 86 ).
  • a significant advantage of such an embodiment is that it builds very little in the axial direction; there is no gearbox or motor in the passage of the water stream, and it thus has a large cross-sectional area to pump significant amounts of water in or out of the farming volume (2).
  • a dead fish sump ( 90 ) is provided for such dead fish and precipitated bottom sludge at the bottom of the shell ( 10 ), see FIG. 5 .
  • the sump ( 90 ) has a drainage pipe ( 91 ) which runs upwards on or in the surface of the shell ( 10 ) to a space at the working deck ( 16 ) in the upper section ( 11 ), and the drainage water stream is driven by a pump ( 92 ).
  • the drainage water stream is fed via a particle separator / treatment plant ( 93 ) which removes sludge to a sludge tank ( 96 ) and delivers purified water to the sea via an outlet pipe ( 94 ).

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Zoology (AREA)
  • Farming Of Fish And Shellfish (AREA)
  • Artificial Fish Reefs (AREA)
US17/795,682 2020-01-28 2021-01-27 Fish farming tank with an internal buoyancy ballast tank Pending US20230106735A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO20200111A NO345758B1 (no) 2020-01-28 2020-01-28 Forbedret oppdrettstank
NO20200111 2020-01-28
PCT/NO2021/050022 WO2021154087A1 (fr) 2020-01-28 2021-01-27 Réservoir d'élevage de poissons doté d'un d'un réservoir de ballast à flottabilité interne

Publications (1)

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US20230106735A1 true US20230106735A1 (en) 2023-04-06

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ID=75278321

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Application Number Title Priority Date Filing Date
US17/795,682 Pending US20230106735A1 (en) 2020-01-28 2021-01-27 Fish farming tank with an internal buoyancy ballast tank

Country Status (9)

Country Link
US (1) US20230106735A1 (fr)
EP (1) EP4096394B8 (fr)
KR (1) KR20220128441A (fr)
CN (1) CN117881280A (fr)
CA (1) CA3167698A1 (fr)
CL (1) CL2022001922A1 (fr)
DK (1) DK202270421A1 (fr)
NO (1) NO345758B1 (fr)
WO (1) WO2021154087A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO20201405A1 (no) * 2020-12-19 2022-05-30 Hauge Aqua Solutions As En flytende, hovedsakelig eggformet oppdrettstank med øvre, sugende pumpeutløp.
NO20220646A1 (en) * 2022-03-03 2023-09-04 Aker Solutions As Closed fish farming structure

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US790046A (en) * 1904-08-26 1905-05-16 Peter J Gildea Submarine caisson and tunnel construction.
CA1075092A (fr) * 1976-01-19 1980-04-08 Seatek (A California Partnership) Methode et appareil de stabilisation d'une structure flottante semi-submersible
US20040023571A1 (en) * 2002-08-05 2004-02-05 Warriner Gerald E. Inflatable multi-wall multi-cell spheroidal shell life raft
US20050284353A1 (en) * 2004-06-24 2005-12-29 Daniel Warnes Ballast system for boats
US20100224136A1 (en) * 2005-01-26 2010-09-09 Papadoyianis Ernest D Aquaculture production system
US20160129979A1 (en) * 2014-11-07 2016-05-12 Abb Technology Ag Transformer in-situ inspection vehicle with a cage hull
US11261105B1 (en) * 2014-12-18 2022-03-01 Michael A. Fesi Oil skimmer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2324505A1 (fr) * 1975-06-27 1977-04-15 Rinaldi Victor Vaisseau semi-submersible a structure spatiale
NO336552B1 (no) * 2013-12-23 2015-09-28 Ocean Farming As Halvt nedsenkbar, sylindrisk merd, stengbare skott for en merd, samt en hevbar bunn for merden.
AU2017347309B2 (en) * 2016-10-19 2019-10-03 Ame2 Pte Ltd System and method for off-shore and in-shore aquaculture using floating closed containment farming and amalgamated facility
NO343380B1 (no) * 2017-08-14 2019-02-18 Hauge Aqua As Forbedret lukket fiskeoppdrettstank
NO20180672A1 (no) * 2018-05-11 2019-07-22 Smartflex As Lukket flytende integrert anlegg for oppdrett av fisk (SemiTorus)

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US790046A (en) * 1904-08-26 1905-05-16 Peter J Gildea Submarine caisson and tunnel construction.
CA1075092A (fr) * 1976-01-19 1980-04-08 Seatek (A California Partnership) Methode et appareil de stabilisation d'une structure flottante semi-submersible
US20040023571A1 (en) * 2002-08-05 2004-02-05 Warriner Gerald E. Inflatable multi-wall multi-cell spheroidal shell life raft
US20050284353A1 (en) * 2004-06-24 2005-12-29 Daniel Warnes Ballast system for boats
US20100224136A1 (en) * 2005-01-26 2010-09-09 Papadoyianis Ernest D Aquaculture production system
US20160129979A1 (en) * 2014-11-07 2016-05-12 Abb Technology Ag Transformer in-situ inspection vehicle with a cage hull
US11261105B1 (en) * 2014-12-18 2022-03-01 Michael A. Fesi Oil skimmer

Also Published As

Publication number Publication date
DK202270421A1 (en) 2022-10-05
CL2022001922A1 (es) 2023-02-03
EP4096394B1 (fr) 2024-02-21
EP4096394B8 (fr) 2024-03-27
KR20220128441A (ko) 2022-09-20
CA3167698A1 (fr) 2021-08-05
WO2021154087A1 (fr) 2021-08-05
EP4096394A1 (fr) 2022-12-07
CN117881280A (zh) 2024-04-12
NO345758B1 (no) 2021-07-12
EP4096394C0 (fr) 2024-02-21

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